Make EffectChainTester capable of testing chains with multiple outputs.

[movit] / resource_pool.h

diff --git a/resource_pool.h b/resource_pool.h
index a331f4f1708c823a076216c0023a81cf099bd802..b218d7ad18f6bea9666e92a96e79098ebbb2262c 100644 (file)
--- a/resource_pool.h
+++ b/resource_pool.h
@@ -66,7 +66,7 @@ public:
        GLuint create_2d_texture(GLint internal_format, GLsizei width, GLsizei height);
        void release_2d_texture(GLuint texture_num);
 
-       // Allocate an FBO with the the given texture bound as a framebuffer attachment,
+       // Allocate an FBO with the the given texture(s) bound as framebuffer attachment(s),
        // or fetch a previous used if possible. Unbinds GL_FRAMEBUFFER afterwards.
        // Keeps ownership of the FBO; you must call release_fbo() of deleting
        // it when you no longer want it.
@@ -77,7 +77,10 @@ public:
        // in particular on NVidia cards. Also, keep in mind that FBOs are not
        // shareable across contexts, so you must have the context that's supposed
        // to own the FBO current when you create or release it.
-       GLuint create_fbo(GLuint texture_num);
+       GLuint create_fbo(GLuint texture0_num,
+                         GLuint texture1_num = 0,
+                         GLuint texture2_num = 0,
+                         GLuint texture3_num = 0);
        void release_fbo(GLuint fbo_num);
 
        // Informs the ResourcePool that the current context is going away soon,
@@ -138,8 +141,11 @@ private:
        std::list<GLuint> texture_freelist;
        size_t texture_freelist_bytes;
 
+       static const unsigned num_fbo_attachments = 4;
        struct FBO {
-               GLuint texture_num;  // 0 means associated to a texture that has since been deleted.
+               // GL_INVALID_INDEX means associated to a texture that has since been deleted.
+               // 0 means the output isn't bound.
+               GLuint texture_num[num_fbo_attachments];
        };
 
        // For each context, a mapping from FBO number to format details. This is